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arXiv · hep-ph/9404339

Constraints on Neutrino-Neutrino Interactions from Primordial Nucleosynthesis

Eduard Massó·Ramon Toldrà
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Abstract

We use the constraints arising from primordial nucleosynthesis to bound the strength $F$ of non-standard neutrino-neutrino interactions, when the right-handed neutrinos participate in the interaction. We find $F < 3 \times 10^{-3}\ G_F$, which is five orders of magnitude more stringent than the limit obtained using LEP data. We also show that secret interactions of neutrinos mediated by massless particles must have a coupling $f$ less than $2 \times 10^{-5}$. This also ameliorates previous limits in the literature.

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Eduard Massó, Ramon Toldrà. 1994-04-26. Constraints on Neutrino-Neutrino Interactions from Primordial Nucleosynthesis. https://doi.org/10.1016/0370-2693(94)91018-9

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